2011 f150 lariat

Ok not long ago I put in
some door seals, ya
know the ones that light
up well I tapped into the
harness under the door
seal plastic, well it
worked and still is
working so I'm not sure
If it has much to do with
my problem, but about 2
months after the 2 front
windows stopped
working and so did the
rear view Camara in the
rear view mirror, it didn't
quit all at once it started
where it would do it
every now and then but
then quit all together
and I ended up changing
out the relay in the fuse
box where the kick
panel is, well it worked
fine but only for about a
month and did the same
but was a lil faster this
time. I've tried to change
the relay again with no
success, can anyone
give me a place to start
something to check
cause as of now I'm
stumped thanks